Heat transfer distribution and flow characteristics in a channel with perforated-baffles

Smith Eiamsa-ard; Somchai Sripattanapipat; Anucha Saysroy; Pongjet Promvonge; Naoki Maruyama; Masafumi Hirota

Energy Reports (Nov 2022)

Heat transfer distribution and flow characteristics in a channel with perforated-baffles

Smith Eiamsa-ard,
Somchai Sripattanapipat,
Anucha Saysroy,
Pongjet Promvonge,
Naoki Maruyama,
Masafumi Hirota

Affiliations

Smith Eiamsa-ard: Division of System Engineering, Graduate School of Engineering, Mie University, Tsu, Mie, 514-8507, Japan; Department of Mechanical Engineering, Mahanakorn University of Technology, Bangkok, 10530, Thailand
Somchai Sripattanapipat: Department of Mechanical Engineering, Mahanakorn University of Technology, Bangkok, 10530, Thailand
Anucha Saysroy: Faculty of Engineering and Industrial Technology, Phetchaburi Rajabhat University, Petchaburi, 76000, Thailand
Pongjet Promvonge: Department of Mechanical Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
Naoki Maruyama: Engineering Innovation Unit, Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie, 514-8507, Japan; Division of Mechanical Engineering, Graduate School of Engineering, Mie University, Tsu, Mie, 514-8507, Japan; Corresponding author.
Masafumi Hirota: Division of Mechanical Engineering, Graduate School of Engineering, Mie University, Tsu, Mie, 514-8507, Japan

Journal volume & issue: Vol. 8
pp. 420 – 426

Abstract

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The current paper reports the prediction of heat transfer performance of a channel with a modified perforated-baffle in a square wings (SW-PB) form. Numerical results include flow/temperature field, local heat transfer distribution, and thermal performance of a channel installed with the transverse solid baffle (TB), perforated-baffle (PB), and perforated-baffle with square wings (SW-PB). The simulation results demonstrated that TB brought a large recirculation flow, PB induced small recirculation and SW-PB produced several impinging jets as well as recirculation flows. Heat transfer rates given by PB were lower than those provided by TB and SW-PB by around 6.8% and 7.3%, respectively which were accompanied by lower friction losses by about 11.8% and 3.6%, respectively. Although, SW-PB gave higher heat transfer, the assessment of thermal performance factor (TPF) showed that the benefit from lower friction losses was more important. Under the same pumping power, TPFs assisted by SW-PB were higher than that assisted by PB and TB by 6.0% and 3.3%, respectively. The highest TPF of 1.2 was captured by SW-PB at Re = 9,000.

Published in Energy Reports

ISSN: 2352-4847 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: http://www.journals.elsevier.com/energy-reports/

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